The question on a lot of people’s minds: How can a father come to terms with the reality that his own son became a mass murderer?

Peter Lanza can’t answer that question; more than a year later, he’s still trying to make sense of it all. One thing he was clear about is what’s not to blame. Peter said he gets frustrated when people suggest that Asperger’s syndrome was the cause of his son’s rampage, saying “Asperger’s makes people unusual, but it doesn’t make people like this.”

He went on to say that if anything, Asperger’s may have veiled another condition like schizophrenia, which could have contributed to the act.

Peter Lanza also said that had his son had the opportunity to take his life he wouldn’t have hesitated.

“With hindsight, I know Adam would have killed me in a heartbeat if he’d had the chance,” he said. “I don’t question that for a minute. The reason he shot Nancy four times was one for each of us: one for Nancy, one for him, one for Ryan, and one for me.”

As for the anniversary of the shooting that passed in December, it didn’t mean much to Peter; it was no different than every other day that he can’t escape what happened.

“It’s not like I ever go an hour when it doesn’t cross my mind,” he said.